Worksheets52. Automatic Plant Watering System - RoboticSchools
Total questions: 7
Worksheet time: 8mins
Can you find the soil moisture sensor below?
What is a relay?
Motor Controller
programmable switch
The Arduino power supply
It's a Microcontroller
Why is relay needed here?
To control the soil moisture sensor
To supply power to the Arduino
to control the water pump at full speed.
Arduino won't give enough current to the water pump.
Where should the signal pin be connected if we want to get precise water content values from the soil moisture sensor?
analog pins
digital pins
power pins
Rx and tx pins
If you set the digital pin to "HIGH," what will the Arduino microcontroller do?
The voltage at the pin is set to 0V.
The voltage at the pin is set to 5V.
The pin's voltage is set to 2.5 V.
What information about the soil does this sensor collect?
Weight of the soil
length of a plant's root system
the soil's water content
What is the relay shown in the pictures below?
